Bruce Wayne, who witnessed the murder of his billionaire parents as a child, swore to avenge their deaths. He trained extensively to achieve mental and physical perfection, mastering martial arts, detective skills, and criminal psychology. Costumed as a bat to prey on criminals' fears, and utilizing a high-tech arsenal, he became the legendary Batman.

Ok, Selina is a definite nerd crush, and a personal favorite, but I have to give this to Poison Ivy. Not only is she extremely attractive but one of her powers is pheromone control. She is also very intelligent and carries her self with confidence, a very sexy combination.